Flush valve



1,556,442 H. HoLcoMB ET Al. f

FLUSH VALVE oct. 6,1925- 1,556,442

L. H. HOLCOMB ET AL FLUSH VALVE Filed May 10, 1922 2 sheets-sheet 2'Illlllll 'flllll @37.

Lamle'f H'Holcomlb Henry-Hauben,

dumm,

Patented oct. s, 1925.

UNITED STATES PATENT OFFICE.

LAMBERT H. HOLCOMB AND HENRY HA'UBENS, 0F OMAHA, NEBRASKA.

FLUSH VALVE.

Application I-ed May 10, 1922. Serial No. 559,831.

To all 'whom 'it may cof/wem: I

Be it known that we, LAMBERT H. HoL- GOMB and HENRY HAUBENs, citizens ofthe United States, residing at Omaha, in the county of Douglas and Stateof Nebraska, have invented certain new and useful 1mprovements in FlushValves, of which the following is a specication.

This invention has for its object, broadly, to provide a flush valveconsisting of few and simple parts so that it may be manuacturedeconomically, may be conveniently assembled and will be durable. One ofthe specific objects is to provide means which may be readily adjustedfor controlling the sliding movement of. the main valve to its seat andthereby regulate the flow of water used for flushing.' Another object isto provide a noiseless feature for the movement of the main valve, thisbeing the provision of a constricted passageway between the flange ofsaid valve and itsl seat operating to modify or retard its speed andpreventingvibratlon. Another specific object is to provide a releasevalve within the main valve having resilient means tending to maintainit on its seat regardless of the degree of pressure and also preventingany deposit of silt or other obstructions on its seat. The inventionalso includes the use of a screen, tending to prevent the entrance ofsand, gravel or other obstructions within the` chamber of the mainvalve.

The invention consists of the novel construction, combination andarrangement of parts as described herein and claimed, and as illustratedin the accompanying drawings, Wherein,- l

Fig. 1 is a sectional view of the main valve. Fig. 2 is a view of thedevice in longitudinal section. Fig. 3 shows a cap and parts mountedthereon, a' cylindrical screen being omitted, the view of the cap beingin lon itudinal section and on an enlarged Sca e. Fig. 4 is a plan viewof the main valve. Fig.

5 is a transverse section through the valve housing on line 5 5 of Fig.8 to clearly show a plurality of lugs for guides. Fig. 6 is a partlybroken, side view of the release valve showing v certain operating partsmounted on its. stem. Fig. 7 is a broken away, side view of a sleeve orspringholder for the stem of the release valve, Fig. 8 is a sectionalView showing position of parts when the main valve is removed from itsseat.

Referrin ynow to the drawing for a more particular escription, numeral 9indicates a valve housin having a compartment 10 through whic Water,under pressure, may pass from its intake ort 11 to its discharge port 12by passmg the valve seat 1K3, subject to the control of a release valve14 having a valve seat 15 in a hollow main valve 16, the latter having acylindrical passageway 17 and adapted to be seated on the valve seat 13.Y

In order that the objects irst mentioned may be attained, we providecertain features to be fully described. Numeral 18 indicates a cap forthe valve housing, said cap being provided centrally with a tubularstem`l9 which projects within the chamber a of the valve 16. At 20 isindicated a ilexible disc or stationary piston which is disposed withinand engages the wall of the chamber a and is secured to the stem 19 bymeans of a screw 21 having a passageway b. Numeral 22 indicates a screwoperating as an adjusting, needle valve, since, by rotating it, itstapered end c may enter the passageway b a desired distance to control aflow of'water to the chamber a from the compartment 10, the Waterpassing through a port-d of the stem 19, and tending, by Water pressureto normally maintain the valves 14 and 16 on their respective seats. Inorder that foreign substances may not enter the chamber a and thereforewill not lodge between the valve 14 and its seat 15, a screen 23 isprovided and is disposed to circumscribe the stem 19, this being adesired feature in operation since, such lodgement would permit aconstant waste of water.

Numeral 24 indicates a screw-plug which is mounted in the top of the capto prevent rotation, `accidental or otherwise, of i the needle-valve 22.

In order that the release-valve 14 may be normally pressed upon itsseat, this pressure being additional to the pressure of water, and thatit may be released readily and effectively, it is provided with a hollowstem 25 adapted to be disposed centrally of the cylindrical flange c of-the valve 16, said stem being provided with a horizontal flange 26adapted to support the lower end of a spiral spring 27.

Numeral 28 indicates a sleeve ada ted to be inserted Within thecylindrical ange e through which water may pass to the discharge port 12from the chamber a, after CTI passing the valve 14, said sleeve' beingprovided with an outwardly projecting flange f for engaging the lowerend ot the flange e, and having an inwardly projecting flange g at itstop for engaging thel upper end ot the spring 27'.l

It will be understood that when the valve 14 moves from its seat, waterwill move through the passageway 17 from the chamber a, the valve 16thereupon moving upwardly from its seat 13, and resulting in the desiredoperation of flushing, the water continuing to flow freely from theintake port 11 to and through the discharge. port 12, the degree ofresistance of the spring 27 being 4such that it will not preventoperation.

The removal o't the release valve from its seat is accomplished by useot a handle 29 having a boss 30 mounted to permit limitedk swingingmovements in the cap 31 which is provided for the tubular projection 32of the valve housing. Numeral 33 indicates al plunger bar mounted topermit longitudinal movements in the projection 32 and having a headvLnormally engaging the boss 30 of the handle by means of a spiral spring34.

At 35 is indicated a stop-meinberhaving a head slidingly mounted in thehollow stem 25 of the valve 14, the head 7c being prevented from movingentirely out of the stem by means of the inwardly projecting flangewhich isprovided for the lower end of said stem, and in operation, aswinging movement of the handle 29, against the torce of the spring 34,will cause the bar 33 to move inwardly of the valve housing 9, intoengagement with the stop-member 35, whereby, member 35, together withthe stem 25 and valve 14 will be moved, the latter being moved from itsseat sulliciently to release the water, or a part thereof, fromv thechamber a, and to permit a free movement of water from the pressure sideto the discharge port 12, by passing the valve seat 13.

It will be understood that the valve 16, by action of gravity, will moveto its seat 13 as soon as the chamber rz becomes lilled with water.Since water moves in the direction of least resistance it will pass thevalve seat 13 and the discharge port 12 from the intake 11, the val-ve14, by action ot the spring 27 remaining on its seat. As s'oon as thatpart of the chamber a, below the piston 20, becomes filled with waterwhich passes through the port d and passageway 7), the valve 16 willengage its seat 1 3, which terminates the operation oi flushing.

When the valve 16 moves upwardly to its highest position, thestop-member 35 will be disposed in a plane somewhat above the plane ofthe plunger-bar 33. The head 7c of the stop-member is adapted to have asliding movement within the hollow stem 25, the object in view for thisconstruction being to cause operation of flushing to be certain,since,'in some instances, an operator, by use of the handle 29, mayinadvertently maintain the plunger-bar in its innermost position. Thishowever, will not prevent a downward movement of the valves andtermination of the liow, since., on account of the construction, if thestop-member engages the upper side ot the bar 33 while the valve 16 ismoving to its seat, the

construction as described, the downwardmovement of the valve 16 will beretarded as soon as the flange e is disposed in close proximity to thevalve-seat 13 since the water will flow through the constrictedpassageway p until the valve 16 is seated. i

Numerals 36 indicate guides or ridges which are provided for the wall ofthe valve housing; they project inwardly ofthe compartment 10, and tendto maintain the valve 16 in a vertical position, and permit a movementof water to the port al.

Numerals 37 indica-te guides of ridges which are provided Jfor thehollow valve 16. They permit a limited rocking movement of the valve 14when the llatter is moved from its seat, but prevent excessive rockingmovements of said valve, and permit a suitable valve 16 through thepassageway 17 when the relief valve is moved from its seat by operationof the handle 29, plunger-bar 33 and stop-member 35. v

While we have described construction in detaihcertain details may bechanged, and changes in form, size and proportions may be made, saidchanges being within the scope ol the invention as claimed,

We claim as our invention,-

1 1n a flush valve, the combination with an upright valve housing havinga valve seat and provided with a cap having a tubular stem projectingtoward the valve seat, said stem being provided with an intake port, avalve rnormally disposed on the valve seat, said valve having an annularchamber opening on its top and provided with a valve seat, a lieXibledisc in the chamber of the valve, a screw threaded in the stem of thecap in engagement with the disc and having a.. passageway communicatingwith said intake port, a needle valve in said tubular stem forcontrolling the passageway of the screw, a screen circumscrihing saidstem in engagement withv said cap and said disc, and a release valvenormally disposed on the valve seat of the vfirst named valve andadapt.-

llow of water from the chamber a of the ed tobe moved for causing amovement of having a passageway communicating with 'the Iirst namedvalve. said intake port, a needle, valve in the stem 2. In a flushvalve, the combination with a of said cap, and a release valve normallydisvalve housing having a valve seat and a cap Aposed on the valve seatof the first named 5 having a tubular stem provided with an in valve andarranged to be moved for causing l5 take port, a valve for said valveseat having a movement of the rst named valve. an annular chamberopening on its top and In testimony whereof, we have aixed our having avalve seat, adisc in the chamber signatures. A of the valve, a screwthreaded in the stem LAMBERT H. HOLCOMB.

10 of the cap in engagement with the disc and I HAUBENS.

